So again, I can't find any clear difference between what we know crocodiles do and what we suspect dinosaurs might have done, which is why it's hard to answer the question, Why did crocs survive?

Birds and dinosaurs walk on just their toes ... “No one knew that large bipedal crocs existed in the early Cretaceous,” he said. As it stands, no physical remains of this species have been ...

Fossils are providing more and more clues about how dinosaurs attracted one another and reproduced, which contributed to their remarkable ability to populate much of the Earth ...

Today's crocodilians are often said to be sur­vivors from the age of dinosaurs. That's true as far as it goes: Modern crocs have been around for some 80 million years. But they're only a small ...

"But dinosaurs as a whole and then things like large fossil sharks and crocs […] would be in the same general boat here as our model since they are known from a handful of specimens," Hone told ...

crocs that lost all their teeth and had beaks and crocs that walked only on two legs.” Steve set about creating a spreadsheet of dinosaur features such as differences in the bones and the skeletons.

So again, I can't find any clear difference between what we know crocodiles do and what we suspect dinosaurs might have done, which is why it's hard to answer the question, Why did crocs survive?